Good question posed by Phillip Pardue.  Of course it does depend on your
perception of restoration.  For some, this means blowing out the dust
and fluff.  For others it means also removing chewing gum and rubber
bands.  I always told my customers I would allow about ten working days,
give or take a day.  This was based on any run-of-the-mill player, up to
and including Aeolians.  Of course I would allow longer for reproducers,
and there were some nondescript makes which would test the brain cells a
bit.  It is not always possible to work continuously on, say, a set of
pneumatics, as there is drying time to consider. But with careful
planning you can move onto something else instead of waiting.  It's very
worthwhile spending time to organise the various operations to minimise
waiting time.  If you're a non-professional doing a one-off player for
the first time, then everything will take considerably longer.  How long,
I don't know.  It's been along time since I began restoring for a
living, and I can't remember.

Cheers,
Paul Camps (enjoying semi-retirement)